I have a guinea that was attacked by a hawk about 2 months ago. His chest was skinned open about 6inches long and 3 wide. I cleaned it as best I could, and put neosporin all over it, then wrapped it with vetrap and kept him confined. I did put him on an antibiotic in his water, just to be on the safe side. He did fine. After a few days I unwrapped him and cleaned it again and put the vetwrap on again. It took a while to cover over with new skin, but it did happen. I also bought some vetricyn, which is expensive, but helps heal fast and can be sprayed on eyes and everything, horses, dogs, etc...good stuff. Needless to say, he is fine now completely healed and just waiting for feathers to grow (which may or may not happen). I hope your chicky makes it...